Stop-cock.



P. C. GBSGN,

STOP 009K.

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APPHCATION FILED OCT. 1? 19H* immed- F'e); 11, 1919.

2 SHEES-SHEEI i.

ATTORNEY PERCY C. GIBSON, OF WAUKEGAN, ILLKNOIS.

STOP-COCK.

Speccation of Letters Patent.

Patented Feb. 11, 1919.l

'pplcation filed October 17, 1917. Serial No. 197,063.

To `@ZZ whom z'Z' may concern.' Be it known that l, PnRor C. GIBSON, a citizen of the United States, residing at Vllaukegan, in the county of Lake and State of illinois, have invented a new and useful Stop-Cock, or" which the following is a. speciication.

The invention relates to plug valve cocks,

' and more particular to the class of adjustlll v a cap for the valve casing, which latter may be utilized as a pipe connector onv the removal of the plug and handle and the itting of a closure capthereon.

further object of the invention is the provision of a stopv cock of this character wherein the plug and its casing are of novel foi-1n, so that in the mounting of the plug within the casing the saine can be conveniently tightened therein with despatch in the event of wear to avoid leakage.

A still further object ofthe invention is the provision of a stop cock of this character which is extremely simple in construction, thoroughly reliable and eliicient in its purpose, strong, durable and inexpensive to manufacture.

"Vith these and other objects in view, the invention consists in'the features of conn struction, combination and arrangement of parts as will bc'hereinafter fully described, illustrated in the accompanying drawings, and pointed out in the claims hereunto appended. 'A

ln the accompanying `drawings:

i Figure 1 is anelevation of' a'- stop cock constructed,A in accordance with the invention showing the cap or collar insection;

Fig. 2 is a vertical longitudinal sectional view through the stop cock;

Fig. 3 is a vertical "transverse sectional view thereof;

Fig. i is a top plan view with'the handle for the valve plug and the cap removed;

'Figi Y5 is a side elevation of a slight modilication 'of the inventlin showing a waste cock;

Fig. 6 is a vertical transverse sectional view thereof;

Fig. 7 is a side elevation of another modification of the invention;

Fig. 8 is a vertical transverse sectional view thereof;

Fig. 9 is a view similar to Fig. 8 showing a further modification of the invention;

Fig. l0 is a vertical longitudinal sectional view through the valve casing shown in Figs. 1 to et in the drawings, with the valve plug removed and a closure cap thereon for the use of the casing as a pipe connector.

Similar reference characters indicate corresponding parts throughout the several views in the drawings.

Referring to the drawings in detail, particularly Figs. 1 to 4e inclusive, there is shown a valve plug casing 1() which is formed with the opposed internally threaded nipple extensions y1l for the connection of pipe sections therewith as usual. The nipple extensions are formed with external wrench-engaging surfaces 12 for permitting the convenient connection of the casing with the pipe. sections. Formed centrallyT in the casing 10 is a downwardly tapered valve plug chamber 13 having the closed lower end 1l and the opposite externally threaded upper open end 15, the closed end 14 being formed with a circular recess 16 greater in size than the smaller lend of the chamber 13 for a purpose presently described.

Fitted within the chamber 13 is a valve plug 17 which is correspondingly shaped to.

said chamber and is formed with a vertical opening or slot 18 centrally thereof, which is adapted to register with the passage 19 in said casing 10 when the plug 17 is in one position for the free passage of fluid through the stop cock.

The wider end of the plug 17 is formed -with a squared socket 20 for the detachable engagement therein of the squared lug 21 formed on an operatinghandle 22. The

lug 21 is detachable from the socket 2O for the removal of the handle 22 from the plug. The handle 22 at the point of juncture of the lng 21 therewith is formed with an annular shoulder 23, with which engages a collar or nut 24 which is detachably engaged with the threaded upper end 15 of the casing 10, and in this manner the handle 22 is held engaged with the plug 17 in sald casing.

Formed in the upper threaded end 15 of the casing 10 is a cut-away portion 24 providing stop shoulders 25 approximately 90 apart, while formed on or engaged in the plug 17 is a stop lug 26 which is adapted to contact with the shoulders 25 for limiting the turning movement of the plug when operated by the handle 22. By thismeans `it can be accurately determined when the opening or slot 18 registers with the passage 19 in the casing, or is at right angles thereto and shut off from ythe same, thereby controlling the flow of fluid through the stop cock.

Formed near the lower or smaller end of the plug 17 is an annular groove 27 and an elongated arcuate notch 28 within the wall of the groove, while threaded in a box 29 formed externally on the casing 10 is an inwardly inclined'adjusting screw 30, the inner rounded end of which engages in the notch 28 to fasten the plug 17 within the chamber 13 inthe casing 10. On the 7ndjustment of this screw, the plug 17 can be loosened or tightened within the casing so as to avoid leakage of the fluid about the plug, and also in this manner wear in the wall of the casing and the plug is taken up. The smaller end of the plug 17 is of less diameter than the recess 16 in l he closed end 14 ot' the easing, so that on adjusting the screw 30, the smaller end o'lthe plug can he drawn into the reitess for the tightening of the plug in said casing as will be clearly apparent. The inclination of the adjusting screw 30 in the casing exerts a downward thrust upon the plug 17, while the said screw engaging in the notch 28 limits the turning ot' the plug thus eoacting with the stop lug 26.

ln Figs. 5 and t3 there is shown a modification of a stop cock, wherein the casing ill at one side thereof is l'ormed with a drain 32, while the plug l has integrally termed therewith the turning handle IH', the lower end portion ot theI plug being formed with the annular groove 35, into which engages the adjusting screw lt which is threaded at an inward inclination inte an external boss 37 tornled on the casinglll, so that the plug :lll is fastened in said dasing in this manner.

rl`he opposed edges ot' the groove 35 are eut. awav l'or a distance to l'orln opposed arcuate notches fits' l'or aceonimmlating the inner end ol the screw lt, which isol'v rela.-

tively large size, and this screw 36 acting in the notches 38 will limit the turning movements of the plug 33 in the casing 3l. Formed on the top o f 'the casing are spaced stops 39, with which contact a stop screw 40 engaged in the plug 33, and in this manner the plug will be limited in its turning movement and at the same time the operator can determine with accuracy the setting of the plug. The said plug isv formed with lthe usual passage 41 therein for the flow of fluid through the easing, and intersecting this passage is the usual vent 42 for the draining of the casing on the side opposite the fluid pressure side on the adjustment of the plug in one position. It will benoted that the adjusting screw 36 will enable the tightening of the plug 33 in the casing to take u wear and avoid leakage.

In Iigs. 7 and 8 of the drawings there is shown another modification of the invention, wherein the plug 43 near its smaller end is formed with an annular groove 44 ot eater size than the adjusting screw 45. he latter is threaded in the casing for the plug at an. inward angle to engage in the groove 44, for the two-f0ld purpose of fastening of the plug in the casing and also for permitting the tightening of the plug therein when occasion requires.

In Fig. 9 there is shown a still further modification of the invention, wherein the plug 46 near its larger' end is formed with an annular groove 47, while threaded in an cxternal boss 48 formed on the casing, at or near the top thereof, is an inwardly inclined adjusting screw 49, which engages in the groove ,47 to fasten the plug in the casing and also for permitting the tightening of the plug therein when desired.

The adjusting screws are provided with screw driyer slots 50 so that a screw driver can be used when occasion requires the tightening of the plug in the it is seen, that the plug can be fastened in the casing and adjusted with despatch.

In Fig. 10 of the drawings, the casing l() which is identical in construction to the casing shown in Figs. 1 to 4 of the drawings` has removed therefrom the plug 17 and its handle 22, together with the collar or nut 24. In lieu thereof a closure cap 5l is detachably engaged on the upper threadial end 15 of said easing, thereby convertiingr said casing l() into a pipe connertor for pipe sections 52, as will he apparent. 'l'he purpose of this is thatv should the stop eoek prove defective after it is installed, instead of disconnecting it from the pipe which would require as much time, and Iahor as the value of the stop cock, the. handle with the plug are removed and the. cap lscrewed on the upper threaded portion.

(lhanges in the forni, proportion. size and minor details ol' construction, within the easing, thus,"

the plug in the casing having a, tf1- ug; com'espondingly and. ii'omsmbly fitted 70 :mnuhr goove, and

mg. :in amgla le groove to aid casing. Y ving a "0a.- 75 corr'esponcngly rotataby tted r groove, and e. mg at an angle S0 m sani "Laing, the 'a mmh is 'coacs 1@ and en,

and tighten :Gfx-Ja being 11 he screw i.miting u im fil-9, on the haring a :im Z110 .m6, n. vias-)em bsisms s,

1mm-1 Sie x x ith the 3.25

plug having an annular groove near one of its extremitles, and a screw clement passing through the casing and engaging the lower Wall of said groove at an angle to the axis of the lug for taking up weer in the Same.

12. n :1 device of the character described, a casing, u plug chamber formed in the casing, u turn plug fitted in the chamber, said plug having :in annulai groove near one of its extremities, and n screw mounted in the casing and engaging the plug in its groove for the triple function of holding the plug in its chamber, taking up wear in the plug, and limiting the rotation of the plug 0n its own axis. 15 In testimony that I claim the foregoing as my own, I have hereto affixed my slgnature in the presence of two witnesses.

PERCY C. GIBSON. Witnesses:

PETER H. Sammie, H. Nowo'rARsxI. 

